Carbureter.



. arts in the several fi ures ofthe drawin s.

curtains n1 ensures, or'wrLlxEs-BARnE, PENNSYLVANIA. I

CARBURETER.

Specification of Letters Patent.

Application filed June 5, 1906. Serial No. 320,322.

' Patented May 2c, 1908.

T c all whom it may concern:

- Be it known that I, CHARLES R. GREUTER, a citizen of the United States, and resident of Wilkes-Barre, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Carbureters,

of which the following is a specification.-

This invention relates to carburetor appliances of the type possessing special utility in connection with highpower motors such as are employed on motor vehicles.

To this end the invention contemplates a "but a. preferred embodiment thereof is shown in the accompanying drawings, in which:

Figure 1 is a vertical lon itudinal sectional view of thecarbureter. fiig. 2 is a vertical transverse sectional view on the line'2-2 of Like references designate corresponding The invention embodies in its general organization a main mixer casing designated in its entirety by the numeral 1 and consisting of a suitably shaped casing adapted for the purposes of the invention. The mixer casing 1 is constructed with what may be properly designated the upper mixing chamber 2 and a lower air chamber .3 separatedby a valve seat opening 4 adapted to be covered and un covered by an air valve 5, which under normal conditions coi'istitutes a separating diaphragm between the chambers 2 and'3, while at'the same timeunder other conditions the said valve acts in the capacity of a supplemental suction air valve for admitting and regulating an; additional supply of air tothe chamber 3from the chamber 2. The valve v 5 is formed with the central openingfi and is provided with a pendent guldmg sleeve 7 at the lower end of which is formed an abutpresently explained. Considering in the first instance the air ment collar 8 the purposes of whiclf will be valve 5 as a separating diaphragm, the same receives through the opening and sleeve thereof a centrally arranged and upright mixing tube9 having at its upper end a lie iug discharge mouth 10 and provided with a flanged lower end '11 extending through the bottom of the air chamber 3 and secured on the outer side thereof, as plainly shown in Figs. 1 ahd 2 of the drawings.

At apoint within the casing 1 the mixing tube 9 is provided with an air port 12- in open communication withthe air chamber 3 and the pipe extension 13 of said chamber, which extension constitutes an air inlet tube for the mixture casing and is in open communication with the outer atmosphere. The lower flanged end 11 of the mixing tube 9 outside of the casing 1 is seated on the flanged rest base 14: formed on the upper side, and contiguous to one end of a hydro-carbon supply pipe 15 which is desi ned to receive the hydro-carbon or liquid fuel from a suitable fuel reservoir 16 connected therewith. ,The rest base 14 of the fuel supply pipe 15 also has supported thereon inside of the tube 9 a fuel feeding tube 17 having at its lower extremity an inlet nipple 18 constituting a valve seat for a needle feed controlling-valve 19 mounted in a screw threaded boxing 20 and is provided with a threaded fitting 21 and a hand wheel 22 for manual control, said wheel having extended therefrom suitably controlled operating connections 3940. The fuel feeding pipe 1-? is arranged concentrically and longitudinally of the mixing tube 9 for the greater portion of the length of the latter.

The air valve 5 has associated therewith apressure lever 22 pivotally mounted between its ends as at 23, within the air inlet tube 13, and having a forked engaging end 24 taking over the valve sleeve 7 and bearing on the collar 8 thereof. The opposite end of the pressure lever .22 has connected therewith a tension link 25 extending through the tube 13 and receiving the pressure of the tension of an exterior pressure spring 26. Amadjustable regulating stop 27 mounted in one side of'the air inlet 13 and arranged in the path of the pressure lever 22 regulates the play of such lever, and hence regulates the degree of opening of the valve The upper mixing-chamber Zfis surmounted by a valve casing 28 in communication with the chamber 2 and formed with a cylindrical valve chamber 2Q accommodating- I therein the hollow cylindrical throttle valve 30 provided with a bottom inlet port31 for the'mlxture and with a top narrow auxiliary air inlet opening 32in alinement with port 31 andedapted toregister with asupplemental air inletport. 33 formed in the top of the valve chamber 29 and adapted to be covered: and uncovered more or less by a slide valve 34. This' slide valve 34 is designed to have suitably controlled operating connections 39 41 which are utilized to move the valve when the conditions of the load require the admission of additional air into the mixture at the point of discharge through the throttle valve 30. The throttle valve 30 is provided at one end with-a rocking valve stem 35 .extending through the casing 28 andis rovided with a controlling connection 37 so t at the outlet of the mixture from the chamber-2 may be controlled. When the throttle valve 30 is nearly closed the air suction in-the chamber? is very much reduced, and is not sufiicient to raise the valve 5 from its seat. -When. the throttle is wide 0 en, the suction in the chamher 2 is very muc 1 increased, and the valve 5 'is. lifted to the highest point, permitting a considerable quantity of air to pass into the chamber 2 between the valve 5 and its seat. The diameter of the chamber '2 being reduced abovethe top of the mixing tube 9 causes the air which rushes into the chamber 2 between the valve 5 and its seat to be deflected and intimately mixed and mingled with the hydro-carbon laden air which enters the chamber through the mixing .tube 9. As the throttle is closed the tension of the spring 26 gradually returns the valve 5 towards its seat.

I have also shown in Fig. 1 a deflector 38 mounted immediately above the top of the mixing tube 9, the purpose of which is to deflect the hydro-carbon laden air which passes up through'the top of the mixing tube 9 and causes it to mingle with the air which 4 0"ente1s the mixing chamber between the valve 5 and its seat when. the valve is raised.

Iclaim: i

1 A carbureter comprising afmixer casing having an air chamber and a mixing chamber, a mixing tube extending through the air chamber into the mixing chamber and provided with an air port opening into the former, fuel .fe'eding means discharging into the mixing tube, an air valve arranged to constitute a diaphragm between the two chambers and provided with a sleeve member slidably mounted on the mixing tube, a spring held lever engaging the air valve and normally holding the same closed, and an adjustable regulator for said lever. I

2-. A carbureter comprising a mixer casing having an air chamber and a mixing chamber, a mixing tube in communication with the air chamber and projectin into the mixing chamber, liquid fuel supply. means discharging into the mixingltube and having a feed controlling valve t erefor, an automatic air valve-.se arating the two chain;

bersi, a discharge va ve casing in communication with the mixing chamber and provided with an auxiliary air inlet port, and a suitably operated throttle valve mounted in said valve casing and having an air inlet opening and also an outlet port for the mixture.

'3. A carbureter comprising a mixer casing having an air chamber and a mixing chamber, a mixing tube extended through and in communication with the air chamber, a supplemental air valve arranged to constitute a diaphragm between the two chambers and provided with a sleeve that is slidably mounted on the mixing tube, and a pivotall mounted lever having an engagement wit 1 the said valve sleeve. 4

' Signed at Wilkes-Barre in the'county of Luzerne and State of Pennsylvania this 10th dayof May A. D. 1906. CHAS. R. GREUTER. Witnesses: i

' R. MOUGLIN,

FRANK L. LESGAULT. 

